Which AWS service can report how AWS resource configurations have changed over time?

Explanations:

AWS CloudTrail records API calls made on your account, providing logs of events but not a historical view of configuration changes.

Amazon CloudWatch monitors resource performance and operational health but does not track configuration changes over time.

AWS Config specifically tracks configuration changes of AWS resources over time and provides a history of resource states.

Amazon Inspector is a security assessment service that identifies vulnerabilities but does not provide tracking of resource configuration changes.